Big Idea: Many things in our world are mathematically similar and we can use this to understand and describe the world around us.
Mathematical Reflection
pg. 40
1. How can you describe whether two figures are similar?
We can decide that two figures by looking at the general shape, angle measure and side lengths.
2. What does the scale factor between two similar figures tell you?
The scale factor between two figures tell me how much the shape got bigger by
3. Explain how can you use the scale factor between two similar figures. Use an example to explain your thinking.
We can use a scale factor of two similar figures to compare the two similar figures.
4. Explain how can you use the scale factor to determine how the area of an enlarged figure compares to the area of the original figure. 1. You just have to square the scale factor to find how the area of an enlarged figure compares to the area of the original figure.
Summary Of My Findings
In this investigation, we learned about determining whether the shapes we saw were similar by comparing corresponding parts. We also looked at rep-tiles, shapes whose copies can be put together to make larger, similar shapes. I also learned more about scale factors.
Block B
February 14, 2011
Big Idea: Many things in our world are mathematically similar and we can use this to understand and describe the world around us.
Mathematical Reflection
pg. 401. How can you describe whether two figures are similar?
We can decide that two figures by looking at the general shape, angle measure and side lengths.
2. What does the scale factor between two similar figures tell you?
The scale factor between two figures tell me how much the shape got bigger by
3. Explain how can you use the scale factor between two similar figures. Use an example to explain your thinking.
We can use a scale factor of two similar figures to compare the two similar figures.
4. Explain how can you use the scale factor to determine how the area of an enlarged figure compares to the area of the original figure.
1. You just have to square the scale factor to find how the area of an enlarged figure compares to the area of the original figure.
Summary Of My Findings
In this investigation, we learned about determining whether the shapes we saw were similar by comparing corresponding parts. We also looked at rep-tiles, shapes whose copies can be put together to make larger, similar shapes. I also learned more about scale factors.